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77008252 | 1 | /* Checking macros for stdio functions. |
83ffe9cd | 2 | Copyright (C) 2004-2023 Free Software Foundation, Inc. |
77008252 JJ |
3 | |
4 | This file is part of GCC. | |
5 | ||
6 | GCC is free software; you can redistribute it and/or modify it under | |
7 | the terms of the GNU General Public License as published by the Free | |
748086b7 | 8 | Software Foundation; either version 3, or (at your option) any later |
77008252 JJ |
9 | version. |
10 | ||
11 | In addition to the permissions in the GNU General Public License, the | |
12 | Free Software Foundation gives you unlimited permission to link the | |
13 | compiled version of this file into combinations with other programs, | |
14 | and to distribute those combinations without any restriction coming | |
15 | from the use of this file. (The General Public License restrictions | |
16 | do apply in other respects; for example, they cover modification of | |
17 | the file, and distribution when not linked into a combine | |
18 | executable.) | |
19 | ||
20 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
21 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
22 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
23 | for more details. | |
24 | ||
748086b7 JJ |
25 | Under Section 7 of GPL version 3, you are granted additional |
26 | permissions described in the GCC Runtime Library Exception, version | |
27 | 3.1, as published by the Free Software Foundation. | |
28 | ||
29 | You should have received a copy of the GNU General Public License and | |
30 | a copy of the GCC Runtime Library Exception along with this program; | |
31 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
32 | <http://www.gnu.org/licenses/>. */ | |
77008252 | 33 | |
77008252 JJ |
34 | |
35 | #ifndef _SSP_STDIO_H | |
36 | #define _SSP_STDIO_H 1 | |
37 | ||
38 | #include <ssp.h> | |
39 | #include_next <stdio.h> | |
40 | ||
41 | #if __SSP_FORTIFY_LEVEL > 0 | |
42 | ||
43 | #include <stdarg.h> | |
44 | ||
45 | #undef sprintf | |
46 | #undef vsprintf | |
47 | #undef snprintf | |
48 | #undef vsnprintf | |
49 | #undef gets | |
50 | #undef fgets | |
51 | ||
52 | extern int __sprintf_chk (char *__restrict__ __s, int __flag, size_t __slen, | |
53 | __const char *__restrict__ __format, ...); | |
54 | extern int __vsprintf_chk (char *__restrict__ __s, int __flag, size_t __slen, | |
55 | __const char *__restrict__ __format, | |
56 | va_list __ap); | |
57 | ||
58 | #define sprintf(str, ...) \ | |
59 | __builtin___sprintf_chk (str, 0, __ssp_bos (str), \ | |
60 | __VA_ARGS__) | |
61 | #define vsprintf(str, fmt, ap) \ | |
62 | __builtin___vsprintf_chk (str, 0, __ssp_bos (str), fmt, ap) | |
63 | ||
64 | extern int __snprintf_chk (char *__restrict__ __s, size_t __n, int __flag, | |
65 | size_t __slen, __const char *__restrict__ __format, | |
66 | ...); | |
67 | extern int __vsnprintf_chk (char *__restrict__ __s, size_t __n, int __flag, | |
68 | size_t __slen, __const char *__restrict__ __format, | |
69 | va_list __ap); | |
70 | ||
71 | #define snprintf(str, len, ...) \ | |
72 | __builtin___snprintf_chk (str, len, 0, __ssp_bos (str), __VA_ARGS__) | |
73 | #define vsnprintf(str, len, fmt, ap) \ | |
74 | __builtin___vsnprintf_chk (str, len, 0, __ssp_bos (str), fmt, ap) | |
75 | ||
76 | extern char *__gets_chk (char *__str, size_t); | |
77 | extern char *__SSP_REDIRECT (__gets_alias, (char *__str), gets); | |
78 | ||
79 | extern inline __attribute__((__always_inline__)) char * | |
80 | gets (char *__str) | |
81 | { | |
82 | if (__ssp_bos (__str) != (size_t) -1) | |
83 | return __gets_chk (__str, __ssp_bos (__str)); | |
84 | return __gets_alias (__str); | |
85 | } | |
86 | ||
87 | extern char *__SSP_REDIRECT (__fgets_alias, | |
88 | (char *__restrict__ __s, int __n, | |
89 | FILE *__restrict__ __stream), fgets); | |
90 | ||
91 | extern inline __attribute__((__always_inline__)) char * | |
92 | fgets (char *__restrict__ __s, int __n, FILE *__restrict__ __stream) | |
93 | { | |
94 | if (__ssp_bos (__s) != (size_t) -1 && (size_t) __n > __ssp_bos (__s)) | |
95 | __chk_fail (); | |
96 | return __fgets_alias (__s, __n, __stream); | |
97 | } | |
98 | ||
99 | #endif /* __SSP_FORTIFY_LEVEL > 0 */ | |
100 | #endif /* _SSP_STDIO_H */ |